CN113026204A - Nano-copper antibacterial antiviral melt-blown fabric and preparation method thereof - Google Patents
Nano-copper antibacterial antiviral melt-blown fabric and preparation method thereof Download PDFInfo
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- CN113026204A CN113026204A CN202110201805.2A CN202110201805A CN113026204A CN 113026204 A CN113026204 A CN 113026204A CN 202110201805 A CN202110201805 A CN 202110201805A CN 113026204 A CN113026204 A CN 113026204A
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/542—Adhesive fibres
- D04H1/544—Olefin series
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F6/04—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins
- D01F6/06—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins from polypropylene
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4282—Addition polymers
- D04H1/4291—Olefin series
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/83—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with metals; with metal-generating compounds, e.g. metal carbonyls; Reduction of metal compounds on textiles
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/20—Polyalkenes, polymers or copolymers of compounds with alkenyl groups bonded to aromatic groups
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- Filtering Materials (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention provides a nano-copper antibacterial antiviral meltblown and a preparation method thereof, belonging to the technical field of antibacterial antiviral materials. The nano-copper antibacterial and antiviral meltblown fabric is generated by melt-blowing polypropylene fibers, and nano-copper particles are adhered to the surfaces of the polypropylene fibers of the meltblown fabric. The nano copper particles enable the melt-blown cloth to have antibacterial and antiviral properties.
Description
Technical Field
The invention belongs to the technical field of antibacterial and antiviral materials.
Technical Field
Antibacterial and antiviral materials have wide application value in the field of medical health, because bacteria and viruses are almost ubiquitous. On a conventional object surface, bacteria or viruses may have a long residence time. If the material has antibacterial and antiviral properties, the time that bacteria or viruses can remain on the surface of the material is greatly reduced.
The antibacterial and antiviral material has obvious application value in public places. For example, in the application occasions of buses, door handles of buildings, keys of elevators and the like, under the condition that the antibacterial and antiviral material is arranged, the antibacterial and antiviral material can be used for re-spreading bacteria and viruses, and has a good restraining effect.
For highly transmitted viruses, if no effective transmission inhibition way is established, the virus has fatal influence on the health of people and normal economic and cultural activities.
How to reduce the influence of the bacterial virus on the health of people and how to prevent the bacterial virus from being spread again are very significant to the health and the health of people.
In the process of preventing new coronavirus, influenza and other respiratory infectious diseases, the mask is an effective blocking tool. The structure of the mask is various, and the functions are different. In the most widely used mask structure, meltblown cloth has important value. The melt-blown cloth is a key structure for isolating bacteria and viruses in the mask.
The melt-blown fabric is generally made in the following manner: the polypropylene fiber is prepared by melting a polypropylene material at a high temperature, and then blowing the molten polypropylene material into fine polypropylene fibers by high-pressure blowing through a small aperture by using high-temperature gas. The blown high-temperature polypropylene fiber is received by the polypropylene fiber collecting surface with lower temperature. The polypropylene fibers can be adhered together by the residual heat of the polypropylene fibers to form the melt-blown fabric. If necessary, the polypropylene fiber can be subjected to hot pressing treatment by a hot pressing device.
How to add antibacterial and antiviral materials in the melt-blown fabric to make the melt-blown fabric have antibacterial and antiviral properties is a current research hotspot.
Disclosure of Invention
The invention aims to provide the nano-copper antibacterial and antiviral meltblown fabric, wherein nano-copper particles are arranged on the surface of polypropylene fibers of the meltblown fabric, so that the meltblown fabric has antibacterial and antiviral properties.
The nano-copper antibacterial and antiviral meltblown fabric provided by the invention is generated by melt-blowing polypropylene fibers, and is characterized in that: and nano-copper particles are adhered to the surface of the polypropylene fiber of the melt-blown fabric.
Furthermore, the particle size of the nano-copper particles is 50nm-250 nm.
Furthermore, the melt-blown fabric comprises a nano-copper structure layer and a polypropylene fiber layer,
wherein the nano-copper structure layer is adhered with nano-copper particles on the surface of the corresponding polypropylene fiber,
the polypropylene fiber layer does not contain nano copper on the corresponding polypropylene fiber.
Furthermore, the nano-copper structure layer and the polypropylene fiber layer are respectively stacked in adjacent positions.
Furthermore, the nano-copper structure layer is arranged in the middle, and polypropylene fiber layers are respectively arranged on two sides of the nano-copper structure layer.
Furthermore, the nano-copper particles on the melt-blown fabric receive the ejected nano-copper particles when the polypropylene fibers are still at high temperature in the process of ejecting the polypropylene fibers.
Furthermore, corresponding to the melt-blown cloth, a nano-copper jet orifice is arranged in a cavity for jetting polypropylene fibers, and nano-copper particles are jetted out through the nano-copper jet orifice in a high-pressure mode.
The invention also provides a preparation method of the nano-copper antibacterial antiviral meltblown, which comprises the following steps:
(1) melting the polypropylene material at high temperature, and blowing out the polypropylene material in a spraying manner through high-temperature airflow to form polypropylene fibers;
(2) blowing out the nano-copper particles in a high-pressure airflow mode in the process of blowing out the polypropylene fibers and/or after the polypropylene fibers fall on the collecting structure, and blowing the nano-copper particles to the polypropylene fibers so as to enable the nano-copper particles to be adhered to the polypropylene fibers;
(3) collecting the polypropylene fiber adhered with the nano copper particles through a collecting structure;
(4) the polypropylene fiber adhered with the nano copper particles is adhered by self waste heat or a hot rolling mill to prepare the melt-blown cloth.
Further, forming a polypropylene fiber layer by spraying polypropylene fibers;
when the polypropylene fiber is in a high temperature state, the nano copper fine particles are blown against the polypropylene fiber layer by the nano copper discharge structure, thereby forming a nano copper structure layer on the polypropylene fiber layer.
Further, the polypropylene fiber layer and the nano-copper structure layer are arranged in a layered staggered manner, the polypropylene fiber layer is firstly arranged, the nano-copper structure layer is triggered to be arranged after the thickness of polypropylene reaches a preset standard, the polypropylene fiber layer and the nano-copper structure layer are taken as a jacket layer, and N jacket layers are arranged in total, wherein N is a positive integer greater than 1.
By the technology described by the invention, nano-copper particles can be conveniently distributed on the polypropylene fiber, and the manufactured melt-blown cloth has the sterilization and disinfection functions through the sterilization and disinfection effects of the nano-copper particles.
Drawings
FIG. 1 is a schematic diagram of a meltblown fabrication chamber of the present invention.
Fig. 2 is a schematic structural diagram of the nano-copper antibacterial and antiviral meltblown described in the present invention, which is an embodiment.
Fig. 3 is a schematic structural diagram of the nano-copper antibacterial and antiviral meltblown fabric described in the present invention, which is another embodiment.
Fig. 4 is a schematic structural diagram of the nano-copper antibacterial and antiviral meltblown described in the present invention, which is another embodiment.
Fig. 5 is a schematic structural diagram of the nano-copper antibacterial and antiviral meltblown described in the present invention, which is another embodiment.
Reference is made to the accompanying drawings in which:
a 100-polypropylene fiber layer;
200-a nano-copper structure layer;
300-melt-blown fabric manufacturing cavity, 310-melt-blown fabric receiving layer, 320-polypropylene material bin, 321-high-pressure gas flow generator for polypropylene, 322-polypropylene channel, 323-high-pressure gas flow channel for polypropylene, 324-polypropylene nozzle, 330-nano copper material bin, 331-high-pressure gas flow generator for nano copper, 332-nano copper channel, 333-high-pressure gas flow channel for nano copper and 334-nano copper nozzle.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples. It should be noted that technical features or combinations of technical features described in the following embodiments should not be considered as being isolated, and they may be combined with each other to achieve better technical effects. In the drawings of the embodiments described below, the same reference numerals appearing in the respective drawings denote the same features or components, and may be applied to different embodiments. Thus, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.
It should be noted that the structures, proportions, sizes, and other dimensions shown in the drawings and described in the specification are only for the purpose of understanding and reading the present disclosure, and are not intended to limit the scope of the invention, which is defined by the claims, and any modifications of the structures, changes in the proportions and adjustments of the sizes and other dimensions, should be construed as falling within the scope of the invention unless the function and objectives of the invention are affected. The scope of the preferred embodiments of the present invention includes other implementations in which functions may be performed out of the order described or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
Referring to fig. 1, there is shown a schematic structural diagram of the apparatus for manufacturing polypropylene fiber with nano-copper adhered on the surface according to the present invention. A polypropylene nozzle 324 is provided in the meltblown manufacturing chamber 300 for ejecting very fine polypropylene fibers. A polypropylene material bin 320 is provided corresponding to the polypropylene spout 324. The polypropylene material cartridge 320 receives a polypropylene material and makes the polypropylene material liquid by means of hot melting. A high-pressure gas flow generator 321 for polypropylene is provided corresponding to the polypropylene material tank 320. The polypropylene is used with a high pressure gas flow generator 321 to generate a high pressure gas flow. The polypropylene material in the polypropylene material bin 320 is guided out through the polypropylene passage 322, and simultaneously, the high-pressure air flow generated by the high-pressure air flow generator 321 for polypropylene is guided out through the high-pressure air flow passage 323 for polypropylene, and the polypropylene material is sprayed out at high pressure through the polypropylene nozzle 324 to form the polypropylene fiber 340.
The nano-copper nozzle 334 is also disposed on the aforementioned meltblown manufacturing chamber 300. A nano copper material bin 330 is arranged corresponding to the nano copper spout 334. In the nano-copper material bin 330, nano-copper material is accommodated. The nano copper material is preferably a powder material, and as a preferred embodiment, the particle size of the nano copper particles is 50nm to 250 nm. A high-pressure airflow generator 331 for nano-copper is provided corresponding to the nano-copper material bin 330. The high-pressure gas flow generated by the high-pressure gas flow generator 331 for nano-copper is led out through the high-pressure gas flow passage 333 for nano-copper.
In the operation process, the nano-copper material contained in the nano-copper material bin 330 is led out through the nano-copper channel 332 and then ejected out through the nano-copper nozzle 334. The ejected nano-copper particles 335 adhere to the surface of the polypropylene fibers 340 just ejected through the polypropylene nozzle 324. The polypropylene fibers 340 adhered with the nano-copper are accumulated on the meltblown receiving layer 310 to form a meltblown. In this way, the surface of the polypropylene fibers of the meltblown fabric is adhered with nano-copper particles.
Further, the nano-copper structure layer can be further configured as follows:
firstly, forming a polypropylene fiber layer in a mode of spraying polypropylene fibers;
when the polypropylene fiber is in a high temperature state, the nano copper fine particles are blown against the polypropylene fiber layer by the nano copper discharge structure, thereby forming a nano copper structure layer on the polypropylene fiber layer.
Furthermore, the polypropylene fiber layer and the nano-copper structure layer are arranged in a layered staggered manner, the polypropylene fiber layer is firstly arranged, the nano-copper structure layer is triggered to be arranged after the thickness of polypropylene reaches a preset standard, one polypropylene fiber layer and one nano-copper structure layer are taken as one jacket layer, and N jacket layers are arranged in total, wherein N is a positive integer greater than 1.
Referring to fig. 2, there is shown an embodiment in which a polypropylene fiber layer and a nano-copper structure layer are separately provided. In fig. 2, a polypropylene fiber layer 100 is shown, and a nano-copper structure layer 200 is disposed above the polypropylene fiber layer 100. Specifically, the nano-copper structure layer 200 is adhered to the surface of the polypropylene fiber layer 100.
Referring to fig. 3, an embodiment in which a polypropylene fiber layer and a nano-copper structure layer are separately provided is also shown here. Three physical layers in total: the top is a layer of nano-copper structures 200 and the bottom two are layers of polypropylene fibers 100. The actual physical structure is such that: the uppermost layer 200 of nano-copper structure is adhered to the middle layer 100 of polypropylene fiber, which are an integral body; the middle polypropylene fiber layer and the bottom polypropylene fiber layer are arranged in a clinging manner. The benefits of this arrangement are: by the double-layer polypropylene fiber layer, a better filtering effect can be realized; meanwhile, the nano-copper structure layer 200 arranged on the surface layer can kill bacteria or viruses accumulated on the surface.
Referring to fig. 4, an embodiment in which a polypropylene fiber layer and a nano-copper structure layer are separately provided is also shown here. In this embodiment, a total of four physical layers are shown: the uppermost is a nano-copper structure layer 200, and a polypropylene fiber layer 100 is arranged in close contact with the lower position; a nano-copper structure layer 200 is disposed under the polypropylene fiber layer 100, and a polypropylene fiber layer 100 is disposed under the nano-copper structure layer 200. The benefits of this arrangement are: by the double-layer polypropylene fiber layer 100, a better filtering effect can be realized; simultaneously, through setting up the nano-copper structural layer 200 on the top layer, can realize killing the effect to gathering at surperficial bacterium or virus, through setting up the nano-copper structural layer 200 between the intermediate layer, can also realize killing the effect to gathering at the bacterium of intermediate layer position or virus.
Referring to fig. 5, in the present embodiment, a total of four physical layers are shown: the polypropylene fiber layer 100 is arranged at the top, and the nano-copper structure layer 200 is arranged close to the lower position; a polypropylene fiber layer 100 is disposed under the nano-copper structure layer 200. By the nano-copper structure layer 200 disposed in the interlayer, a sterilizing effect can be achieved against bacteria or viruses accumulated at the interlayer position.
In correspondence to the meltblown manufacturing chamber 300 shown in fig. 1, in combination with the above description, the present invention further provides a method for preparing a nano-copper antibacterial and antiviral meltblown, which comprises the following steps:
(1) melting the polypropylene material at high temperature, and blowing out the polypropylene material in a spraying manner through high-temperature airflow to form polypropylene fibers;
(2) blowing out the nano-copper particles in a high-pressure airflow mode in the process of blowing out the polypropylene fibers and/or after the polypropylene fibers fall on the collecting structure, and blowing the nano-copper particles to the polypropylene fibers so as to enable the nano-copper particles to be adhered to the polypropylene fibers;
(3) collecting the polypropylene fiber adhered with the nano copper particles through a collecting structure;
(4) the polypropylene fiber adhered with the nano copper particles is adhered by self waste heat or a hot rolling mill to prepare the melt-blown cloth.
In the foregoing description, the disclosure of the present invention is not intended to limit itself to these aspects. Rather, the various components may be selectively and operatively combined in any number within the intended scope of the present disclosure. In addition, terms like "comprising," "including," and "having" should be interpreted as inclusive or open-ended, rather than exclusive or closed-ended, by default, unless explicitly defined to the contrary. All technical, scientific, or other terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs unless defined otherwise. Common terms found in dictionaries should not be interpreted too ideally or too realistically in the context of related art documents unless the present disclosure expressly limits them to that. Any changes and modifications of the present invention based on the above disclosure will be within the scope of the appended claims.
Claims (10)
1. The nano-copper antibacterial and antiviral meltblown fabric is formed by melt-blowing polypropylene fibers and is characterized in that: and nano-copper particles are adhered to the surface of the polypropylene fiber of the melt-blown fabric.
2. The nano-copper antibacterial and antiviral meltblown fabric according to claim 1, wherein: the particle size of the nano copper particles is 50nm-250 nm.
3. The nano-copper antibacterial and antiviral meltblown fabric according to claim 1, wherein: the melt-blown cloth comprises a nano-copper structure layer and a polypropylene fiber layer,
wherein the nano-copper structure layer is adhered with nano-copper particles on the surface of the corresponding polypropylene fiber,
the polypropylene fiber layer does not contain nano copper on the corresponding polypropylene fiber.
4. The nano-copper antibacterial and antiviral meltblown fabric according to claim 3, wherein: the nano-copper structure layer and the polypropylene fiber layer are respectively stacked in adjacent positions.
5. The nano-copper antibacterial and antiviral meltblown fabric according to claim 3, wherein: the nano-copper structure layer is arranged in the middle, and polypropylene fiber layers are respectively arranged on two sides of the nano-copper structure layer.
6. The nano-copper antibacterial and antiviral meltblown fabric according to claim 1, wherein: the nano-copper particles on the melt-blown cloth receive the ejected nano-copper particles when the polypropylene fibers are still at high temperature in the process of ejecting the polypropylene fibers.
7. The nano-copper antibacterial and antiviral meltblown fabric according to claim 1, wherein: corresponding to the melt-blown cloth, a nano-copper jet orifice is arranged in a cavity body for spraying polypropylene fiber, and nano-copper particles are sprayed out through the nano-copper jet orifice in a high-pressure mode.
8. A preparation method of nano-copper antibacterial antiviral meltblown is characterized by comprising the following steps:
(1) melting the polypropylene material at high temperature, and blowing out the polypropylene material in a spraying manner through high-temperature airflow to form polypropylene fibers;
(2) blowing out the nano-copper particles in a high-pressure airflow mode in the process of blowing out the polypropylene fibers and/or after the polypropylene fibers fall on the collecting structure, and blowing the nano-copper particles to the polypropylene fibers so as to enable the nano-copper particles to be adhered to the polypropylene fibers;
(3) collecting the polypropylene fiber adhered with the nano copper particles through a collecting structure;
(4) the polypropylene fiber adhered with the nano copper particles is adhered by self waste heat or a hot rolling mill to prepare the melt-blown cloth.
9. The preparation method of the nano-copper antibacterial and antiviral meltblown fabric according to claim 8, wherein the preparation method comprises the following steps:
firstly, forming a polypropylene fiber layer in a mode of spraying polypropylene fibers;
when the polypropylene fiber is in a high temperature state, the nano copper fine particles are blown against the polypropylene fiber layer by the nano copper discharge structure, and a nano copper fine particle layer is formed on the polypropylene fiber layer.
10. The preparation method of the nano-copper antibacterial and antiviral meltblown fabric according to claim 9, wherein the preparation method comprises the following steps: the polypropylene fiber layer and the nano-copper particle layer are arranged in a layered staggered manner, the polypropylene fiber layer is firstly arranged, the nano-copper particle layer is triggered to be arranged after the thickness of polypropylene reaches a preset standard, one polypropylene fiber layer and one nano-copper particle layer are taken as a jacket layer, and N jacket layers are arranged in total, wherein N is a positive integer greater than 1.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110201805.2A CN113026204A (en) | 2021-02-23 | 2021-02-23 | Nano-copper antibacterial antiviral melt-blown fabric and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110201805.2A CN113026204A (en) | 2021-02-23 | 2021-02-23 | Nano-copper antibacterial antiviral melt-blown fabric and preparation method thereof |
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| CN113026204A true CN113026204A (en) | 2021-06-25 |
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